[ewg] RDS problematic on RC2

[Or Gerlitz]

Ralph Campbell wrote:
> Attached is the patch I sent to Olaf.
> It basically exchanges calls like dma_map_sg() to ib_dma_map_sg()
> so that the InfiniPath driver can intercept the DMA mapping
> calls and use kernel virtual addresses instead of physical addresses.
> The InfiniPath driver uses the host CPU to copy data in most cases
> instead of DMA.  I doubt this will fix or change the other issues
> Olaf is working on for RDS.

OK, got it.

Or